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Goatfishes (Mullidae) as indicators of environmental changes: biology, population structure, and managementстатья
- Авторы: Pavlov D.A., Emel’yanova N.G.
- Сборник: Proceedings of the Workshop “Developing life–supporting marine ecosystems along with the Asia–Pacific coasts – a synthesis of physical and biological data for the science–based management and socio–ecological policy making”
- Год издания: 2016
- Издательство: DALNAUKA
- Местоположение издательства: UL. RADIO 7, VLADIVOSTOK, RUSSIA, 690041
- Первая страница: 68
- Последняя страница: 72
- Аннотация: Goatfishes from the family Mullidae are regarded as key species in the coastal biotopes due to their special feeding behavior: sediments are mixed by means of a pair of barbels located on the chin of the fish that attracts other fishes to form foraging aggregations. These fishes have a commercial value for fishery and can be used as the indicators of changes registered in biotopes under the influence of different factors including anthropogenic pressure. In fishes, the reproductive system is sensitive to environmental changes. Anomalies in ovarian structure have been studied in three widely distributed goatfish species (Parupeneus multifasciatus, Upeneus tragula, and U. margarethae) from the Marine Protected Area (MPA) of Nha Trang Bay. The fishes were collected in the buffer zone of the MPA.Based on histological analysis, abnormal oocyte structure was observed in ovarian fragments of a large number of females of all three species (table). The following anomalities are registered in the oocytes at the periods of vitellogenesis and maturation: partial destruction and loosening of the cytoplasm, widening of the zona radiata, decreased size of yolk granules and destruction of some of them, uneven distribution of lipid vacuoles, total destruction of the content of vitellogenous oocytes with the appearance of cellular debris, resorption of oocytes with partial disruption of yolk granules and lipid vacuoles, etc.
- Добавил в систему: Емельянова Наталья Григорьевна